23126945 has 4 divisors (see below), whose sum is σ = 27752340. Its totient is φ = 18501552.

The previous prime is 23126941. The next prime is 23126951. The reversal of 23126945 is 54962132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11621281 + 11505664 = 3409^2 + 3392^2 .

It is a cyclic number.

It is not a de Polignac number, because 23126945 - 2² = 23126941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23126941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312690 + ... + 2312699.

It is an arithmetic number, because the mean of its divisors is an integer number (6938085).

Almost surely, 2^23126945 is an apocalyptic number.

It is an amenable number.

23126945 is a deficient number, since it is larger than the sum of its proper divisors (4625395).

23126945 is an equidigital number, since it uses as much as digits as its factorization.

23126945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625394.

The product of its digits is 12960, while the sum is 32.

The square root of 23126945 is about 4809.0482426360. The cubic root of 23126945 is about 284.9089480349.

The spelling of 23126945 in words is "twenty-three million, one hundred twenty-six thousand, nine hundred forty-five".